During her first workout at Orangetheory Fitness in Fairfax, Va., Donna Reid was blown away by two things: "how hard it was and how loud it was." The 51-year-old adored the interval training program, ...

With more waistlines bulging over more belts, no wonder the idea that we can be hefty and healthy is so popular. But before you go ahead and celebrate your girth, the concept of healthy obesity is being...

The best advice for cancer prevention is to do what your mom always told you: Eat your fruit and vegetables, get some exercise and keep that weight in a healthful range, says Stephen Hursting, a professor...

It's that time of year when New Year's resolutions begin to fade, and even the best-laid plans can become sidetracked as life gets busy. But as psychologists and behavioral economists have found reasons...